Young Cambridgeshire dieters following "clean eating" regimes that cut out dairy produce face ruining their health in later life, a charity has warned.

A National Osteoporosis Society (NOS) survey found four in 10 young adults have tried the fashionable diets that often involve avoiding dairy, gluten, grain and sugar, while more than fifth had severely restricted their intake of milk and cheese.

Fuelled by social media, the clean eating trend has surged in popularity in recent years, with some advocates achieving celebrity status with hundreds of thousands of followers such as Ella Mills and the Hemsley sisters.

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"Without urgent action being taken to encourage young adults to incorporate all food groups into their diets and avoid clean eating regimes, we are facing a future where broken bones will become the norm.

"Osteoporosis is a painful and debilitating condition and young adults have just one chance to build strong bones."

The NOS surveyed more than 2,000 adults and found 70 per cent of those aged 18 to 35 were on or had been on a diet and 18 to 24-year-olds were most likely to have tried 'clean eating'.

The diets often focus on avoiding processed foods and eating raw, unrefined produce, largely consisting of fruit and vegetables.

A National Osteoporosis Society (NOS) survey found four in 10 young adults have tried the fashionable diets that often involve avoiding dairy, gluten, grain and sugar, while more than fifth had severely restricted their intake of milk and cheese. (Image: Getty Images)